@manual{ulmul.rubyforge.org,
        Author     = {西松毅},
        Title      = {ULMUL取扱説明書},
        Note       = {{\tt http://ulmul.rubyforge.org/}},
        Year       = {2008--2010}}

@manual{Slidy,
        Author     = {Dave Raggett},
        Title      = {HTML Slidy: Slide Shows in HTML and XHTML},
        Note       = {{\tt http://www.w3.org/Talks/Tools/Slidy/}},
        Year       = {2005--2010}}

@manual{ruby-mathml,
        Author     = {黒田拓},
        Title      = {Ruby用MathMLライブラリ},
        Note       = {{\tt http://www.hinet.mydns.jp/?mathml.rb}},
        Year       = {2005--2010}}

@manual{ulmul-rubygems,
        Title      = {ulmul$|$RubyGems.org},
        Note       = {{\tt http://rubygems.org/gems/ulmul}}}

@manual{STIX,
        Title      = {STIX Fonts Project Website},
        Note       = {{\tt http://www.stixfonts.org/}}}
